Corrosion-resistant pipe coupling structures

Details Corrosion-resistant pipe coupling structures Corrosion-resistant pipe coupling structures

F - Mech Eng,Light,Heat,Weapons

16

L

285/63

F16L 15/00 (2006.01) E21B 17/08 (2006.01)

Patent

CA 1182147

ABSTRACT OF THE DISCLOSURE A corrosion-resistant pipe coupling made of carbon steel has on its inner surface an intermediate annular projection directed radially inward. At least an innermost part of the annular projection is formed of corrosion-resistant material such as stainless steel. The annular projection is covered by a corrosion- resistant annular member or which is secured by friction welding, electron beam welding, an adhesive or mechanical engagement. The annular member prevents corrosion of the coupling by corrosive fluids flowing in pipes.

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